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Boss OS-2 Dual-Gain Plus Mod Kit — Now for Guitar & Bass!

Pedal Type


If you’re looking for a clean boost this probably is not the pedal for you. But if you’re looking for a take no prisoners Distortion look no further. This pedal stock, is like a swarm of angry bees. No body or focus to the gain at all. It’s all over the place.

Not any more. It’s now a very smooth, thick, FAT and nasty Distortion. Although it’ll do overdrive, that’s not the strength of this mod. You want overdrive buy a SD-1 or TS9. If you want a radical Distortion, THEN BUY THIS MOD!

The switch adds two gain options. An LED and a 1N914 diode. The LED adds a thick warm FAT Distortion and the 1N914 will give you a very harmonically rich and FAT gain that will do pinched harmonic as good as any mod I’ve created so far. The real beauty is you can get a used OS-2 on eBay for cheap.. I paid $40 shipped for the OS-2 I used to creat the mod. 3mm Yellow Super Bright LED is included.

WARNING!  There is an older vintage version that my mod will not work with. That version does not have enough room between the input jack and the pcb directly above it to fit the dual stack adapter assembly. I have included a pic to show you which version will and which will not work. Please review this info before placing your order. Review the pic here.

Mod Options

For Guitar, For Bass


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Boss OS-2 Dual-Gain Plus Mod Kit — Now for Guitar & Bass!
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